Chainsaw sharpener



FIG. 1 is a perspective view of a chainsaw sharpener showing the claimed design;

FIG. 2 is another perspective view of chainsaw sharpener showing the claimed design;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a partial enlarged view of an area labeled 9 in FIG. 1 .

The broken lines illustrate portions of the chainsaw sharpener that form no part of the claimed design. The dot-dash lines illustrate the boundary of the enlarged view and firm no part of the claimed design. 

CLAIM The ornamental design for a chainsaw sharpener, as shown and described. 